Re: [syzbot] KASAN: use-after-free Read in nfc_llcp_sock_unlink

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On Mon, Jun 7, 2021 at 2:27 AM syzbot
<syzbot+8b7c5fc0cfb74afee8d1@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit f567d6ef8606fb427636e824c867229ecb5aefab
> Author: Maxim Mikityanskiy <maxtram95@xxxxxxxxx>
> Date:   Sun Feb 7 14:47:40 2021 +0000
>
>     HID: plantronics: Workaround for double volume key presses

Dear syzbot,

I highly doubt my commit could fix any use-after-free bug in NFC. It's
not related to NFC, and it's not a bugfix. Probably the repro isn't
100% stable, so the bisect results are invalid.

> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14e41588300000
> start commit:   bbd6f0a9 bnxt_en: Fix RX consumer index logic in the error..
> git tree:       net
> kernel config:  https://syzkaller.appspot.com/x/.config?x=339c2ecce8fdd1d0
> dashboard link: https://syzkaller.appspot.com/bug?extid=8b7c5fc0cfb74afee8d1
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1712a893d00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1298b469d00000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: HID: plantronics: Workaround for double volume key presses
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection



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